"OAuth authentication and authorization protocol information" matching MCP servers:

• mcp-gmail-oauth

  flujo-app

  A

  license

  -

  quality

  C

  maintenance

  A self-hostable Gmail MCP server that enables Gmail search/read, sending, replies, drafts, labels, and attachment downloads via MCP tools with OAuth authorization. Supports stdio and streamable HTTP transports.

  Last updated 2026-08-03

  MIT

• capture-and-slack-mcp

  baho0

  A

  license

  A

  quality

  B

  maintenance

  Relays a result screenshot to Slack so you can review a coding agent's output without opening the app.

  Last updated 2026-07-09

  7

  MIT

• Google Calendar and Meet MCP

  INSIDE-HAIR

  F

  license

  B

  quality

  D

  maintenance

  Enables comprehensive Google Meet and Calendar management through Google Calendar API v3 and Google Meet API v2, supporting calendar event creation with Meet links, space management, transcription, recording, attendance tracking, and meeting moderation controls.

  Last updated 2025-08-29

  24

  2

• Discord MCP OAuth2 Server

  djanmagno

  A

  license

  -

  quality

  D

  maintenance

  Enables reading Discord messages and server information using your own account via OAuth2, no bot required.

  Last updated 2025-09-16

  MIT

• Slack Gitlab Digest Model

  chaodonghu

  F

  license

  -

  quality

  D

  maintenance

  Summarizes Slack activity and GitLab merge requests with OpenAI to help generate daily standups, weekly reports, or quarterly check-ins.

  Last updated 2026-01-12

• Outlook OAuth MCP Server

  Leonine-Studios

  F

  license

  -

  quality

  C

  maintenance

  Enables interaction with Microsoft Outlook for managing emails and calendars through OAuth2 delegated access. It provides a stateless, spec-compliant server that allows users to authenticate and perform mail and calendar operations with their own Microsoft accounts.

  Last updated 2026-05-15

• Share A Bot MCP A2A

  codeislaw101

  A

  license

  A

  quality

  C

  maintenance

  Discover and connect your agents with other agents via A2A protocol. Share resources for free or fee.

  Last updated 2026-04-15

  6

  MIT

• LinkedIn Sales & Navigator MCP

  adityaidev

  F

  license

  A

  quality

  -

  maintenance

  Enables AI assistants to interact with LinkedIn and LinkedIn Sales Navigator for searching profiles, managing leads, and handling messaging via cookie-based authentication. It supports professional networking tasks such as sending connection requests and retrieving account details through the Model Context Protocol.

  Last updated 2026-02-05

  22

  1

• Artificial Virtual Assistant

  Ayoub-etoullali

  A

  license

  -

  quality

  D

  maintenance

  An MCP server that provides AI applications with a toolset for an Artificial Virtual Assistant (AVA) integrated with the Gmail API. It enables users to automate email management and personal tasks through secure Google OAuth authentication.

  Last updated 2025-12-19

  1

  Apache 2.0

• Multi-agent Communication

  AgentWorkshop

  A

  license

  -

  quality

  D

  maintenance

  A standardized interface for agent-to-agent communication that enables composability, supports streaming, and implements server-sent events (SSE) for real-time interaction.

  Last updated 2025-07-27

  Apache 2.0

• OSMP (Octid Semantic Mesh

  Octid-io

  F

  license

  -

  quality

  C

  maintenance

  Agentic AI instruction encoding. 86.8% smaller than JSON. Inference-free decode by table lookup. 342 opcodes, 26 namespaces, three conformant SDKs. Confirmed over LoRa mesh radio. Apache 2.0 with express patent grant.

  Last updated 2026-05-10

  5

• Banking Model Context Protocol

  Abhinav-pyth

  F

  license

  -

  quality

  D

  maintenance

  Implements a secure message communication protocol for handling exchanges between the banking chatbot and Azure OpenAI, providing message queuing, reliability, and detailed logging.

  Last updated 2025-04-20

  1

• Message Control Protocol (MCP)

  avhrst

  F

  license

  -

  quality

  -

  maintenance

  A REST API server implementation for message handling with Oracle Database integration via ODBC, offering endpoints for creating and retrieving messages with comprehensive error handling.

  Last updated 2025-06-13

• MCP Braze

  delta-and-beta

  F

  license

  -

  quality

  D

  maintenance

  Production-ready MCP server enabling AI assistants to interact with Braze's customer engagement platform, offering 92 tools for user management, messaging, campaigns, analytics, email/SMS, catalogs, and SCIM provisioning.

  Last updated 2026-01-16

• MCP Servers for QA and Release

  1olegshev

  F

  license

  -

  quality

  D

  maintenance

  A collection of MCP servers for Slack, Jira, Confluence, and release coordination to automate QA workflows and daily release status reporting.

  Last updated 2026-02-12

• Gmail Sender MCP Server

  TheMossConcept

  A

  license

  A

  quality

  D

  maintenance

  Enables sending emails and creating drafts through the Gmail API with OAuth 2.0 authentication.

  Last updated 2026-02-09

  2

  22

  MIT

• Slack MCP Server

  oregpt

  F

  license

  B

  quality

  D

  maintenance

  Enables AI agents to interact with Slack workspaces through OAuth authentication, supporting message reading, posting to channels and threads, and channel discovery with popularity sorting.

  Last updated 2025-11-01

  4

• X-MCP 2.0

  JialiangFan

  A

  license

  B

  quality

  D

  maintenance

  Enables users to interact with X/Twitter via Claude, allowing posting tweets, searching, liking, retweeting, and more using OAuth 2.0 PKCE authentication.

  Last updated 2026-03-30

  10

  7

  MIT
• 

  tl;dv MCP for Zoom, Googleofficial

  tldv-public

  F

  license

  B

  quality

  D

  maintenance

  lets you interact with your meeting data (to list, ask, summarize, extract - virtually anything about your meeting) through Claude’s desktop client across Zoom, Google Meet and MS Teams via tl;dv.

  Last updated 2025-12-12

  4

  204

  13

• google-workspace-mcp

  shanebrady77

  F

  license

  B

  quality

  D

  maintenance

  MCP server providing full access to Google Workspace services (Gmail, Drive, Calendar, Docs, Sheets, Slides, Forms, Tasks, Contacts) using OAuth authentication.

  Last updated 2026-04-06

  100

  1